LiveView is a nifty app for your iPhone or iPad that allows you to instantly screencast from your computer to your mobile device. It works over your network connection in conjunction with a desktop app. it was created by Nicolas Zambetti, a San Francisco based interaction designer.
I’ve found LiveView extremely useful over these past couple weeks during iPhone app development. To be able to quickly see how your graphics look in the intended environment is priceless, especially when compared to the alternative option, which usually involves dev simulators, wires, syncing, and TIME. This app essentially allows me to view Photoshop on my phone, live, while I make adjustments. Amazing.
Frank Chimero recently wrote a great piece on his hardware/software set-up. If I were to write my own, LiveView would be the most recent addition to the “essential” category.